Power-actuating mechanism



Jan. 15, 1929. 1,698,942

E. DAVIS POWER ACTUATING MECHANISI Filed May 12, 1926 INVENTOR.

ATTORNEYS Patent ed Jan. 15, 1929.

UNITED, STATES" PATENT OFFICE;

ERNEST DAVIS, 01: SYRACUSE, NEW YORK, ASSIGNOR TO THE PROSPERITY COMPANY 11m, on SYRACUSE, NEW YORK,

A CORPORATION OF NEW YORK.v

POWER-AGTUATING MECHANISM.

Application filed May 12,

This invention relates to power actuating.

mechanism particularly adapted for actuat ing the movable element of apressing machine, which actuating mechanism is of the type shown in mypendingapplication Sr. No. 671,568, filed October 29, 1923 and it hasfor its object a particularly simple and efiicient control mechanismwhereby two hands are required to control the flow of motive fluid tothe fluid motor or (which is in this instance a cylinder and a singleacting portion,) during the power stroke and but one hand is required tocontrol the actuation of the motor during its return stroke,

and then only a momentary actuation of the control means is required.

The invention consists in the novel fea-' tures and in the combinationsand constructions hereinafter set forth and claimed.

In descri ing this invention reference is had to the accompanyingdrawing,which is v a diagrammaticalview-partly in section and partlybroken away of an actuating mecha nism embodying .my invention.

prises, generally, a fluid operating motor as a cylmder, and a singleacting plston movable in the cylinder, means for controlling the flow ofmotive fluid to and from the motor or cylinder, including afeed conduitor feed line for the motive fluid as compressed air, a combined intakeor exhaust pipe leading to the cylinder, a valve casing between the mainfeed conduit and the combined intake and exhaust pipe, combined intakeand exhaust valves therein normally arranged so that the intake valve isclosed and the exhaust valve open, dual-manual means for controlling theoperating of the valves, and fluid operated means for holding the valvesin their operated position after the motor has been actuated by themotive fluid or air a predetermined distance, that is after the pistonhas travelled a predetermined distance in the cylinder or the mechanismactuated by the piston a predetermined amount, and a single manual forreleasing the last mentioned fluid operated means so that the combinedvalve will return to its normal position'in which the intake valve isopen and the exhaust valve-closed so that air can exhaust from thecylinder through .the combined intake and exhaust pipe, and the valvecasing. e I,

The fluid motor is here shown as a cyl- ThlS power actuating mechanismcom "which receives motive 1926. Serial No. 108,460.

inder and a piston movable in the cylinder and 1 designatesthe'cylinder, 2 the piston therein having the usual rod 3. 4 is the and.10 the exhaust valve movable toward and from the seat 11 in the casing,the valves being connected to move as a unitby a. stem 12. The pipe 6communicates with the valve casing between the valves 8 and 10. Thecombined valves are normally held with the intake valve closed and theexhaust valve open by a spring 13 and also by the air pressure from thepipe 4.

The dual manual means for operating the valves is here shown ashydraulic in character andconsists of a pair of sylphons 14, 15communicating through pipes 16, 17 with a pipe 18, which communicateswith a sylphon 19 of .a capacity equal to both of the sylphons. 14, 15,ghe sylphon 19 operating on a stem 20 whic coacts with the lever 21, thelever acting on a plunger 22, which in turn thrusts against the valve10. The lever 21 acts on the plunger 22 through an interposed lever 23to be hereinafter described. The actuation of either sylphon 14, 15 does'not' displace enough liquid in the system to actuate the sylphon 19sufliciently to operate the .valves 8 and 9, but the operation of eithertwo of these sylphons 14, 15 merely displaces the oil or fluid from oneinto the other. Thedepression of both the sylphons 14, 15 is-required tocompress the fluid or oil in the sylphon 19 so that it acts to actuatethe lever 21. This form of dual manual moved a predetermined distance,as here shown comprises a fluid operated means has traveled apredetermined distance, this fluid operated means being here shown as adiaphragm 24 located in a diaphragm fluid after the piston v uncoveredby the piston when the phragm chamber and actuate the diaphragm from itsposition shown in the drawings in;

full lines to the dotted line position and thus actuate a plunger 28acting with the lever 23. This lever 23 is pivoted'at 29 between itsendsso that when the plunger". 28 is actuated this lever 23 thrusts againstthe plunger 22 of the exhaust valve 11 and holds the exhaust valve inits closed position and hence the intake valve 8 in its open position.

In order to permit the valve 8 to close and the exhaust valve 11 to openin order to exhaust the motive fluid from the cylinder, a

' single manual means is provided to exhaust the air from the diaphra gmchamber 25, this to a sylphon 35.

means including a valve located in the pipe 26. 30 designates the valvein a valve casing 31 in the pipe 26, the valve 30 being normally held inclosed position by a spring 32. This valve is operated by a manuallyoperable sylphon 33 connected by a pipe 34 which in turn acts upon thestem 36 of the valve 31-, obviously de- 1 pressing of the sylphon 33will cause'the sylphon to open the valve 30 so that the air exhaustsfrom the diaphragm chamber 25 whereby the spring 13 is free to close theintake valve 8 and open the exhaust valve 11 and also through theplunger 11, the lever 23 returns the sylphons 19, 14 and 15 to theirnormal position, if they have not assumed their normal position undertheir own resiliency.

\Vhat I claim is 1 A power actuating mechanism comprising a fluidopera-ted motor, means for controlling the flow of motive fluid to andfrom the motor including a feed conduit for the motive fluid, a combinedintake and exhaust pipe leading to the cylinder, a Valve casing betweenthe feed conduit and the intake pipe, combined intake and exhaust valvein said casing arranged so that the intake valve is normally closed andthe exhaust valve normally opened, dual means for operating saidcombined valves to open the intake and close the exhaust, and fluidoperated means operated by the pressure of the motive fluid, apipe-connecting said fluid operated means and the fluid operated motorto receive m0- .ti ve fluid-therefrom, a normally manual for opening thelast mentioned valve.

2. A'power actuating mechanism com prising a fluid operated motor andmeansfor controlling the flow of fluid to and from the motor includingmanually operable combined intake and exhaust valves ndrmally in aposition in which the exhaust valve is open and the intake valve closed,means for holding and returning the valves to their normal position,pressure operated means controlled by" the motor for holding thecombined valves in their operated position against the action of thereturning means and a separate manually operable valve for controllingthe flow of fluid to and from the pressure operated means. 3. A poweractuating mechanism comprising a fluid operated 'motor including acylinder and a piston, means for controlling the flow of fluid to andfrom the motor including a feed conduit for a motive fluid, an intakeand outlet pipe leading to the cylinder having combinedintake andexhaust valves therein arranged with the intake normally closed and theexhaust valvenormally open and means tending to return and hold thevalves in their normal position, pressure operated means for holdingsaid valves in their operated position against the returning means and aconduit connecting the pressure operated means and the fluid motorwhereby the pressure of the motive fluid in the motor is transferredthrough said conduit to the pressure operated means to operate it and anormally closed manually oper. ble exhaust valve in said conduit.

In testimony whereof, I have hereunto signed my name, at Syracuse, inthe county of Onondaga and in the State of New York, this 26th day ofApril, 1926.

ERNEST DAVIS.

closed valve in said last mentioned conduit. and a single

